Engineering topics

Olivia M Penrose

Publications and source records attributed to Olivia M Penrose.

2 records

NASA NTRSDate not supplied

UV Curing Polymers For Radiation Shielding Applications

The scope of the current research is to develop polymers that will be durable under space conditions. In space, polymers can undergo thermal, mechanical, and oxidative degradation depending on which direction in space they are rotated (ram, wake, zenith, or nadir). Polymers can also be synthesized using techniques such as UV-radiation curing1,2 and cross-linking. In the current project, three organic molecules, acrylamide, styrene-butadiene, and triethylene glycol divinyl ether, were studied using computational software called OLTARIS3 (On-Line Tool for the Assessment of Radiation In Space) developed by NASA Langley to predict the degree of radiation shielding. All three molecules showed shielding before 60 g/cm2 areal density.

UV Curing↗

NASA NTRSDate not supplied

Galactic Cosmic Ray (GCR) Study of Dose Versus Depth for Eight UV-Curable Polymers

The scope of the research project is to synthesize new polymers for use by astronauts in space. The polymers would be created using the energies and particles in space (UV, X-Rays, electrons, etc.). To understand the effects of these energies and particles on polymers, eight known UV-curable polymers were researched and simulated in OLTARIS (On-Line Tool for the Assessment of Radiation In Space). Galactic Cosmic Rays (GCR) were incident on each material, and the Dose in Grays/day was calculated. Silicon was used as the standard detector.1 Polydimethylsiloxane was the most shielding material, and fluorinated ethylene propylene was the least shielding material.

Polymers↗